Since commit ab06ec43577177a442e8 we test the vmxnet3 device in the
pxe-tester, too (when running "make check SPEED=slow"). This now
revealed that the code is not working there if the host is a big
endian machine (for example ppc64 or s390x) - "make check SPEED=slow"
is now failing on such hosts.
The vmxnet3 code lacks endianess conversions in a couple of places.
Interestingly, the bitfields in the structs in vmxnet3.h already tried to
take care of the*bit* endianess of the C compilers - but the code missed
to change the*byte* endianess when reading or writing the corresponding
structs. So the bitfields are now wrapped into unions which allow to change
the byte endianess during runtime with the non-bitfield member of the union.
With these changes, "make check SPEED=slow" now properly works on big endian
hosts, too.
Reported-by: David Gibson<address@hidden>
Signed-off-by: Thomas Huth<address@hidden>
---
v2:
- Introduced vmxnet3_ring_read_curr_txdesc() & vmxnet3_pci_dma_write_rxcd()
helper functions to wrap the byte-swapping code that is required in
multiple places (as suggested by Philippe)